EP1148834B1 - Cartouche de distribution a chambre etagee - Google Patents

Cartouche de distribution a chambre etagee Download PDF

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Publication number
EP1148834B1
EP1148834B1 EP99925675A EP99925675A EP1148834B1 EP 1148834 B1 EP1148834 B1 EP 1148834B1 EP 99925675 A EP99925675 A EP 99925675A EP 99925675 A EP99925675 A EP 99925675A EP 1148834 B1 EP1148834 B1 EP 1148834B1
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EP
European Patent Office
Prior art keywords
section
piston
chamber
sectional area
head portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99925675A
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German (de)
English (en)
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EP1148834A1 (fr
Inventor
Robert W. Petrich
Thomas W. Martin
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3M Innovative Properties Co
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3M Innovative Properties Co
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Publication of EP1148834A1 publication Critical patent/EP1148834A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
    • A61C5/62—Applicators, e.g. syringes or guns
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
    • A61C5/66—Capsules for filling material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like

Definitions

  • the present invention relates to a disposable dispensing cartridge of the type adapted to be releasably received in a hand-held applicator having a movable plunger.
  • the dispensing device is an assembly that includes a reusable dispenser or applicator and a disposable cartridge.
  • the cartridge contains a quantity of a composition or material to be dispensed and is releasably received in a receptacle of the applicator.
  • the applicator has a plunger that is advanced by the user during a dispensing operation. Often, the plunger is received in an open end of the cartridge and bears against a piston within the cartridge. As the plunger is advanced to move the piston, the piston expels a quantity of material through a front outlet opening of the cartridge.
  • Dispensing devices that include a reusable applicator and a disposable cartridge are favored in many instances, especially in instances where the applicator is relatively expensive in comparison to the cost of the cartridge.
  • many applicators have a movable lever or arm for facilitating advancement of the plunger.
  • Some applicators have a ratchet mechanism associated with the arm or lever for enhancing control over movement of the plunger. Obviously, it is desirable to reuse such applicators in order to reduce costs and avoid disposal issues.
  • Dispensing devices with disposable cartridges are often used in the field of dentistry for dispensing dental compositions such as restoratives, adhesives, cements, etching gels, sealants and the like.
  • dental compositions such as restoratives, adhesives, cements, etching gels, sealants and the like.
  • the cartridge and the front portion of the applicator receiving the cartridge are relatively small so that the cartridge can be readily maneuvered in the oral cavity during a dispensing operation. In that manner, the dental material contained in the cartridge may be conveniently dispensed directly onto the tooth structure as needed.
  • hand-held applicators also called dispenser or ejector-type guns
  • dispenser or ejector-type guns Examples of hand-held applicators (also called dispenser or ejector-type guns) that have been used in dentistry are described in U.S. Patent Nos. 4,198,756, 4,391,590 and 4,472,141.
  • cartridges also known as capsules
  • hand-held applicators Examples of hand-held applicators (also called dispenser or ejector-type guns) that have been used in dentistry are described in U.S. Patent Nos. 4,198,756, 4,391,590 and 4,472,141.
  • cartridges also known as capsules
  • useful with those applicators are described, for example, in U.S. Patent Nos. 4,391,590, 4,767,326, 5,100,320 and 5,624,260.
  • dispensing cartridges are often relatively small and adapted to be used with a single patient.
  • the cartridge is disposed of after the procedure has been accomplished and the applicator is disinfected before use with a subsequent patient. In this manner, the risk of transferring an infectious disease from one patient to another is substantially reduced.
  • spatula or other similar tool for placing high viscosity paste-like compositions (such as restorative materials) in the oral cavity.
  • This practice involves placing a small quantity of the material onto the spatula and then maneuvering the spatula as needed to place and transfer the material onto the patient's tooth structure.
  • dispensing methods that involve dispensing dental compositions from a cartridge directly onto the tooth structure.
  • syringes having a plunger that is advanced by a thumb screw have been used to dispense viscous dental compositions.
  • the thumb screw provides a substantial mechanical advantage so that relatively viscous compositions can be dispensed without undue effort.
  • dispensing typically involves the use of both hands of the practitioner, one hand being used to hold the body of the syringe while the other hand is used to turn the thumb screw.
  • such devices are generally not used to dispense a composition directly to a patient's tooth structure.
  • a cartridge especially adapted for use for one-handed dispensing of high viscosity compositions.
  • a cartridge could be used with commercially available applicators so that a specially-made applicator is unnecessary.
  • a dispensing cartridge for use with high viscosity compositions that is especially suitable for use by dental practitioners in order to dispense a precise quantity of such compositions directly onto a tooth surface and at an exact location as desired without undue effort.
  • US 4, 767, 325 discloses a composite ampule including a composite reservoir having an enlarged upper interior portion and a smaller lower interior portion, and a piston movable within the reservoir.
  • the plunger of the piston is in the shape of a cylinder and is designed to substantially fill the lower interior portion.
  • US 5, 165, 890 discloses a dental cartridge used in dispensing dental material.
  • the cartridge includes a curved body portion having a first bore, and a curved nozzle having a second bore having a constant diameter smaller than a diameter of the first bore.
  • the cartridge also includes a piston having a shaped end complimenting a discharge end of the body portion and an appendage extending from the shaped end of the piston adapted to fit in the second bore of the nozzle.
  • the invention in its various aspects as described above has a significant advantage, in that less force is needed to dispense the composition from the second section of the chamber.
  • the invention is particularly useful for dispensing paste-like materials having a relatively high viscosity such as highly filled dental restorative compositions. Such materials can be readily dispensed by one hand of the user without undue effort, so that the dispensing operation is facilitated and the material can be dispensed in a precise location as intended.
  • FIG. 1 An example of a dispensing cartridge constructed in accordance with the principles of the present invention is illustrated in Figs. 1-4 and is broadly designated by the numeral 10.
  • the cartridge 10 includes a body 12 having a chamber 14.
  • the cartridge 10 also includes a piston 16 that is movable in the chamber 14 to dispense a composition 18 from the chamber when desired.
  • the body 12 includes an open inlet end 20 and an outlet or outlet opening 22 that is remote from the open end 20.
  • the outlet opening 22 is part of a passage that extends through a discharge nozzle 24 that is integrally connected to the body 12.
  • the chamber 14 is elongated and extends from the open end 20 to a location adjacent the outlet opening 22.
  • the chamber 14 includes a first, rear cylindrical section 26 and a second, front cylindrical section 28.
  • the first section 26 is adjacent the open end 20 and the second section 28 is adjacent the outlet opening 22.
  • the central longitudinal axes of both of the sections 26, 28 are collinear with the longitudinal axis of the chamber 14.
  • the longitudinal axis of the chamber 14 is designated by the numeral 30.
  • the diameter of the second chamber section 28 is less than the diameter of the first chamber section 26. Consequently, the cross-sectional area of the second chamber section 28 is less than the cross-sectional area of the first chamber section 26 when considered in reference planes transverse to the longitudinal axis 30. As such, the chamber 14 presents a stepped configuration, with a smaller cross-sectional area as the outlet opening 22 is approached.
  • the outer surface of the body 12 also presents a stepped appearance, the advantage of which will be described in the paragraphs below.
  • the outer diameter of the body 12 adjacent the second chamber section 28 is less than the outer diameter of the body 12 adjacent the first chamber section 26.
  • a tapered transition wall having the shape of a truncated cone extends between the major extent of the outer wall surrounding the first chamber section 26 and the major extent of the outer wall surrounding the second chamber section 28.
  • the cartridge body 12 also preferably includes a rear flange 32 that circumscribes the open end 20.
  • the rear flange 32 is useful for retaining the cartridge 10 in an applicator as described below.
  • a rear external wall of the rear flange 32 is chamfered as can be appreciated, for example, by reference to Figs. 2 and 3, although, as an alternative the flange 32 could have a 90 degree rear outer corner if desired.
  • the open end 20 includes a chamfered portion that leads to the chamber 14.
  • the chamfer near the open end 20 facilitates insertion of the piston 16 during assembly of the cartridge 10.
  • a small chamfer is optionally provided in the chamber 14 between the sections 26, 28 in order to help reduce stress concentrations in the body 12.
  • the piston 16 is elongated and includes a head portion 34 and a tail portion 36.
  • the piston 16 also includes an elongated shank 38 that integrally interconnects the head portion 34 and the tail portion 36.
  • the head portion 34 of the piston 16 includes a cylindrical segment 40 and a tapered, preferably frustoconical segment 42 that is integrally connected to the cylindrical segment 40.
  • the frustoconical segment 42 has a flat front end.
  • the cylindrical segment 40 has an outer diameter that is approximately the same as the inner diameter of the second chamber section 28.
  • the segment 40 is integral with remaining portions of the piston 16, although other constructions are also possible.
  • the segment 40 is an initially separate seal or O-ring that is connected to a piston head.
  • the tail portion 36 of the piston 16 also has a cylindrical shape, and preferably has an outer diameter that is approximately the same as or slightly smaller than the diameter of the first chamber section 26.
  • the shank 38 has a cross-sectional area in sections transverse to the longitudinal axis of the piston 16 that is less than the cross-sectional area of the head portion 34 and the tail portion 36 in sections transverse to the longitudinal axis of the piston 16.
  • the reduced cross-sectional area of the shank 38 helps to decrease frictional resistance to advancement of the piston 16.
  • the shank 38 also has a cylindrical configuration with a central axis that is collinear with the central axes of the cylindrical segment 40 and the tail portion 36.
  • Suitable materials for the piston 16 include plastics such as polypropylene.
  • plastics such as polypropylene.
  • An example of a suitable polypropylene material is No. 3467 from Fina.
  • Suitable materials for the body 12 also include plastic materials.
  • An example of a suitable plastic material for the body 12 is a nylon resin such as Zytel brand nylon resin, No. 101L from DuPont.
  • Other examples of suitable materials for the cartridge body 12 are described in U.S. Patent Nos. 5,624,260 and 5,100,320.
  • the cylindrical segment 40 of the piston head portion 34 has an outer diameter that is sufficiently large to present a seal between the piston head portion 34 and the inner wall portions of the body 12 surrounding the second section 28, so that the composition 18 is effectively discharged through the outlet opening 22 as the piston 16 is advanced.
  • the cylindrical segment 40 presents a slight interference fit with the chamber wall portions surrounding the second chamber section 28 to provide an effective seal.
  • the cylindrical segment 40 may have an outer diameter of 0.132 in. (3.35 mm) while the inner wall portions of the body 12 surrounding the second chamber section 28 may have an internal diameter of 0.130 in. (3.3 mm).
  • the diameter of the tail portion 36 is sufficient to retain the longitudinal axis of the piston 16 in substantial alignment with the longitudinal axis 30 of the chamber 14.
  • the outer diameter of the tail portion 36 is not unduly large so that it does not present significant frictional resistance to advancement of the piston 16 in the chamber 14.
  • the tail portion 36 may have an outer diameter of 0.166 in. (4.2 mm) while the first chamber section 26 has a diameter of 0.170 in. (4.3 mm).
  • the discharge nozzle 24 is integrally connected to the body 12 and has a longitudinal, central axis that extends at an acute angle relative to the longitudinal axis 30 of the chamber 14.
  • the discharge nozzle 24 could extend along an axis collinear with the longitudinal axis 30 of the chamber 14.
  • the discharge nozzle 24 may be bendable by hand to any one of a number of configurations adapted to best serve the dispensing operation at hand.
  • the discharge nozzle 24 is made of a hand-formable metal cannula that retains its shape once bent.
  • the composition 18 initially fills the passage extending through the discharge nozzle 24 as well as the second chamber section 28 in regions in front of the piston head portion 34. In this manner, void space within the chamber 14 is reduced and the composition 18 is extruded from the cartridge 10 essentially simultaneously with initial advancement of the piston 16.
  • An example of a dispensing device useful for dispensing the composition 18 from the cartridge 10 is a hand-held applicator such as the applicator 50 shown in Figs. 4 and 5.
  • the applicator 50 as illustrated is identical to well-known applicators used in the dental field (such as 3M's dental applicator no. 5706SD) and includes a housing 52 with a depending handle 54.
  • a rear lever 56 of the applicator 50 is connected to the housing 52 by a pivot 58 for swinging movement about a horizontal reference axis when the handle 54 extends in a vertical direction.
  • the front of the housing 52 includes a tubular projection having an internal cylindrical receptacle 60 for releasably receiving the cartridge 10.
  • the cartridge 10 When the cartridge 10 is received in the receptacle 60, the cartridge 10 extends through a circular opening located at the front end of the housing 52.
  • the circular opening has a diameter that is somewhat larger than the outer diameter of the body 12 in areas surrounding the first chamber section 26.
  • the circular front opening of the housing 52 has a diameter that is somewhat smaller than the outer diameter of the rear flange 32 in order to retain the cartridge 10 in the receptacle 60.
  • the front tubular projection of the housing 52 also includes an upper opening 62 (Fig. 4) adjacent the receptacle 60 for inserting the cartridge 10 in the receptacle 60 when desired.
  • the confined opening 62 is located laterally of the receptacle 60.
  • the applicator 50 is sometimes known as a "breech-loading" applicator.
  • the front tubular projection of the housing 52 includes a lower elongated slot 64 that is shown in Fig. 5.
  • the slot 64 extends from the front end of the housing 52 and is adjacent the receptacle 60.
  • the slot 64 conveniently provides additional clearance for the front of the cartridge 10 including the nozzle 24 when the cartridge 10 is inserted into or removed from the receptacle 60.
  • the applicator 50 includes an elongated plunger 66 with a rear, somewhat semispherical enlarged head 68.
  • the plunger 66 also includes an elongated cylindrical shaft 70 that is preferably made of a relatively strong, wear-resistant material such as stainless steel.
  • a coiled compression spring 72 surrounds the plunger 66 and is located between the head 68 and a rear opening of a passageway through the tubular projection of the housing 52 that leads to the receptacle 60.
  • a drive means of the applicator 50 includes a pair of curved cam surfaces 74, one of which is illustrated in Fig. 4.
  • the cam surfaces 74 are formed on an upper, inner portion of the lever 56 and are oriented for sliding engagement with the curved surface of the plunger head 68.
  • the head 68 rides along the cam surfaces 74 and moves the plunger 66 in a forward direction toward the cartridge 10 when the cartridge 10 is received in the receptacle 60.
  • the outer diameter of the shaft 70 is somewhat smaller than the diameter of the first chamber section 26 of the cartridge 10.
  • the length of the piston shank 38 is selected so that the piston 16 reaches its limit of travel in a forward direction once the front annular wall of the tail portion 36 contacts the shoulder located in the chamber 14 between the first section 26 and the second section 28.
  • the piston head portion 34 is very near the front end of the chamber 14 to ensure that substantial all of the composition 18 has been expelled from the second chamber section 28.
  • the length of the piston shank 38 is selected so that the piston 16 reaches its forward limit of travel when the head portion 34 contacts the inner wall portions of the chamber 14 near or at the front end of the second chamber section 28.
  • the relatively small diameter of the second chamber section 28 facilitates dispensing of relatively high viscosity materials such as dental pastes.
  • the relatively small diameter of the second chamber section 28 reduces the volume of the composition 18 that is expelled from the cartridge 10 per unit length of advancement of the piston 16, and as a consequence less force is needed to advance the piston 16 per unit length than would otherwise be needed with a chamber having a larger internal diameter. More particularly, if the pressure (in units of force per unit area) needed to advance the piston 16 and expel the composition 18 increases due to an increase in viscosity of the composition 18, the amount of force needed can remain the same if the cross-sectional area of the piston 16 is reduced. Moreover, the smaller internal diameter of the second chamber section 28 is closer in cross-sectional area to the passage through the outlet opening 22 and the discharge nozzle 24, with the result that there is less resistance to the flow of the composition 18 from the chamber 14.
  • the stepped configuration of the chamber 14 advantageously enables the cartridge 10 to be used with conventional applicators such as the applicator 50.
  • conventional applicators such as the applicator 50.
  • simply reducing the internal diameter of conventional cartridges would not be as advantageous as the present invention, since the resulting internal diameter of such a cartridge may be smaller than the outer diameter of the plunger shaft 70 of a conventional applicator, with the result that the user would be essentially required to purchase a new applicator having a plunger shaft with a smaller diameter.
  • the first chamber section 26 of the cartridge 10 of the present invention is preferably sufficiently large to receive the plunger shaft 70 of conventional applicators such as applicator 50, the cartridge 10 may be used with applicators that are already available in the dental office and in the marketplace.
  • the stepped configuration of the cartridge body 12 is also an advantage in that insertion and removal of the cartridge 10 from the receptacle 60 is facilitated.
  • the user may opt to tilt the cartridge 10 relative to the receptacle 60 during insertion of the cartridge in order to more readily move the cartridge to a fully inserted or seated position with the rear flange 32 moved as far forwardly as possible toward the circular opening at the front end of the housing.
  • the stepped configuration of the body 12 provides clearance for facilitating such tilting and advancing motions.
  • the elongated configuration of the body 12 and the piston 16 provides enhanced placement of the dispensed composition 18 on its intended location.
  • the increased length of the cartridge 10 facilitates locating the discharge nozzle 24 in restricted areas of the oral cavity such as posterior regions including areas of the patient's molar teeth.
  • the relatively long cartridge 10 also improves the user's visibility during a dispensing operation, since the user's hands on the applicator 50 are located somewhat farther away from the discharge nozzle 24 and the intended area to receive the dispensed composition 18.
  • the cartridge 10 of the present invention is also an advantage in that the relatively long body 12 is easier to grasp and manipulate in comparison to conventional cartridges.
  • the length of the cartridge 10 facilitates insertion and removal of the cartridge 10 from the applicator, particularly in instances where a breech-loading applicator such as applicator 50 is employed.
  • the cartridge 10 is particularly useful for dispensing high viscosity dental compositions such as restorative materials.
  • the diameter of the second chamber section 28 is smaller than the first chamber section 26, the volume of the second section 28 is sufficient to contain enough composition 18 (along with the amount of composition contained in the discharge nozzle 24) to meet a dental practitioner's expectations (e.g., about 0.2 g of restorative material when the second chamber section 28 has a diameter of 0.13 in).
  • other dental materials such as cements (e.g., luting cements and orthodontic cements), etching gels, glass ionomer cements, sealants and the like may alternatively be used.
  • the cartridge 10 may also be used to dispense non-dental compositions such as adhesives or other materials for household, industrial, medical or other applications.
  • the cartridge 10 may be used with applicators other than the applicator 50 shown in Figs. 4 and 5.
  • applicators of the type having a side-loading receptacle may be employed.
  • suitable alternative applicators are shown in U.S. Patent Nos. 4,198,756, 4,391,590, 4,472,141 and 5,743,436.
  • Ten cartridges of conventional construction and ten cartridges of the invention received a quantity of Z100 dental restorative paste (from 3M Company). The paste was placed into the cartridges using a filling tube and then tamped by hand; subsequently, a piston was placed into each cartridge and pushed into the open end.
  • Z100 dental restorative paste from 3M Company
  • the force needed to advance the pistons of the ten filled conventional cartridges was determined and averaged 26.97 kg with a standard deviation of 2.2.
  • the frictional force of 0.20 kg i.e., the force needed to advance the piston of a similar empty cartridge
  • the test was repeated for the ten filled cartridges of the invention and it was determined that the force needed to advance the pistons averaged 19.34 kg with a standard deviation of 2.2.
  • the frictional force of 3.5 was then subtracted to yield a result of 15.82 kg, a reduction in the amount of force of 40.9%.
  • the data shows that a substantial (i.e., 40.9%) reduction in extrusion force necessary to dispense a dental composition was provided by the present invention, though the inner diameter of the capsule chambers was decreased by only a relatively small amount (i.e., from 4 mm to 3.25 mm).

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Claims (10)

  1. Cartouche de distribution (10) à connecter de façon détachable à un applicateur manuel, comprenant:
    un corps (12) comprenant une extrémité ouverte (20) destinée à recevoir un plongeur d'un applicateur, le corps comprenant aussi une ouverture de sortie (22) et une chambre allongée (14) s'étendant entre l'extrémité ouverte et l'ouverture de sortie, la chambre comprenant une première section (26) adjacente à l'extrémité ouverte et une deuxième section (28) adjacente à l'ouverture de sortie, la première section présentant une certaine aire de section transversale essentiellement constante transversale à l'axe longitudinal de la chambre lorsque l'on se rapproche de l'ouverture de sortie, la deuxième section présentant une certaine aire de section transversale essentiellement constante transversale à l'axe longitudinal de la chambre lorsque l'on se rapproche de l'ouverture de sortie qui est plus petite que ladite certaine aire de section transversale essentiellement constante de la première section, et la section transversale de la deuxième section étant plus proche de celle de l'ouverture de sortie que celle de la première section; et
    un piston allongé (16) reçu de façon coulissante dans la chambre (14), le piston comprenant une partie de tête (34), une partie de queue (36), la partie de queue présentant une face arrière destinée à entrer en contact avec le plongeur de l'applicateur, la partie de queue, y compris la face arrière, étant reçue dans la première section, et la partie de tête étant reçue dans la deuxième section, et une tige (38) qui interconnecte la partie de tête et la partie de queue, la tige présentant une aire de section transversale dans une section transversale à l'axe longitudinal du piston qui est plus petite que l'aire de section transversale de la partie de tête et de la partie de queue dans une section transversale à l'axe longitudinal du piston.
  2. Cartouche de distribution selon la revendication 1, dans laquelle la partie de tête (34) comprend un segment (40) présentant une aire de section transversale dans des sections transversales à l'axe longitudinal du piston qui est approximativement identique à ladite certaine aire de section transversale essentiellement constante de la deuxième section (28) de la chambre (14).
  3. Cartouche de distribution selon la revendication 1, dans laquelle la partie de queue (36) présente une aire de section transversale dans des sections transversales à l'axe longitudinal du piston qui est approximativement identique à ladite certaine aire de section transversale essentiellement constante de la première section (26) de la chambre (14).
  4. Cartouche de distribution selon la revendication 1, dans laquelle la cartouche comprend une buse de décharge (24) connectée au corps (12) et entourant l'ouverture de sortie (22).
  5. Cartouche de distribution selon la revendication 1, dans laquelle la partie de tête (34) du piston (16) présente un segment avant conique (42).
  6. Cartouche de distribution selon la revendication 1 comprenant une quantité de composition dentaire (18) dans la deuxième section (28) de la chambre (14) entre la partie de tête (34) du piston (16) et l'ouverture de sortie (22).
  7. Cartouche de distribution selon la revendication 2, dans laquelle le diamètre du segment (40) de la partie de tête (34) est suffisant pour établir un joint avec le corps (12) dans la deuxième section (28) de la chambre (14) lorsque le piston (16) est déplacé dans une direction qui l'éloigne de l'extrémité ouverte (20).
  8. Cartouche de distribution selon la revendication 4, dans laquelle la buse de décharge (24) présente un axe longitudinal qui s'étend en formant un angle aigu par rapport à l'axe longitudinal de la chambre (14).
  9. Cartouche de distribution selon l'une quelconque des revendications 1 à 8, dans laquelle le corps (12) comprend une bride (32) qui entoure l'extrémité ouverte (20) pour retenir de façon détachable la cartouche dans un applicateur.
  10. Procédé de distribution d'une composition dentaire, comprenant les étapes consistant à :
    fournir une cartouche (10) comprenant une chambre (14) présentant une première section globalement cylindrique (26) et une deuxième section globalement cylindrique (28), le diamètre de la deuxième section étant inférieur au diamètre de la première section, et un piston allongé (16) reçu de façon coulissante dans la chambre (14), le piston comprenant une partie de tête (34), une partie de queue (36) et une tige (38) qui interconnecte la partie de tête et la partie de queue, la tige présentant une aire de section transversale dans une section transversale à l'axe longitudinal du piston qui est plus petite que l'aire de section transversale de la partie de tête et de la partie de queue dans une section transversale à l'axe longitudinal du piston;
    placer la cartouche dans un réceptacle d'un applicateur manuel (50); et
    faire avancer un plongeur (66) de l'applicateur jusqu'à ce qu'il appuie directement sur la partie de queue (36) du piston située dans la première section de la chambre et déplace le piston, de telle sorte que la partie de tête (34) du piston située dans la deuxième section de la chambre pousse une composition dentaire (18) dans la deuxième section de la chambre à travers une ouverture de sortie (22), l'aire de section transversale de la deuxième section étant plus proche de celle de l'ouverture de sortie que celle de la première section.
EP99925675A 1999-01-29 1999-05-18 Cartouche de distribution a chambre etagee Expired - Lifetime EP1148834B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/240,389 US6095814A (en) 1999-01-29 1999-01-29 Dispensing cartridge with stepped chamber
US240389 1999-01-29
PCT/US1999/011048 WO2000044300A1 (fr) 1999-01-29 1999-05-18 Cartouche de distribution a chambre etagee

Publications (2)

Publication Number Publication Date
EP1148834A1 EP1148834A1 (fr) 2001-10-31
EP1148834B1 true EP1148834B1 (fr) 2007-04-04

Family

ID=22906329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99925675A Expired - Lifetime EP1148834B1 (fr) 1999-01-29 1999-05-18 Cartouche de distribution a chambre etagee

Country Status (7)

Country Link
US (1) US6095814A (fr)
EP (1) EP1148834B1 (fr)
JP (1) JP2002535071A (fr)
AU (1) AU4191699A (fr)
CA (1) CA2360681A1 (fr)
DE (1) DE69935736T2 (fr)
WO (1) WO2000044300A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7988677B2 (en) 2001-05-24 2011-08-02 Covidien Ag Hand-held, hand-operated power syringe and methods
US8539644B2 (en) 2006-10-24 2013-09-24 Mallinckrodt Llc Hinge assembly for an injector
US8672893B2 (en) 2007-10-23 2014-03-18 Control Medical Technology, Llc Syringe with rotatable element, aspiration systems including the syringe, and associated methods
US10058656B2 (en) 2006-10-24 2018-08-28 Pmt Partners, Llc Syringe with rotatable element, systems including the syringe, and associated methods

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6503084B2 (en) 2000-02-24 2003-01-07 Dentsply Detrey G.M.B.H. Method for dispensing dental materials
US20040144801A1 (en) * 2000-09-21 2004-07-29 Pierson Paul Richard Mixing tip for dental materials
CA2425308C (fr) 2000-10-13 2009-05-12 Paul R. Pierson Dispositif de stockage et de distribution de plusieurs composants devant etre melanges
JP2005500124A (ja) * 2001-08-23 2005-01-06 デンツプライ インターナショナル インコーポレーテッド 液体歯科材料用アプリケータ
US20030196914A1 (en) * 2002-04-18 2003-10-23 3M Innovative Properties Company Containers for photocurable materials
US20040038174A1 (en) * 2002-08-25 2004-02-26 Dentsply Research & Development Corp. Applicator for liquid dental materials
US7320596B2 (en) * 2002-12-09 2008-01-22 Dentsply International Inc. Cartridge for viscuos dental material
AU2004265031B2 (en) * 2003-08-14 2011-03-10 3M Deutschland Gmbh Capsule for two-component materials
EP1667599B1 (fr) * 2003-09-23 2015-10-21 DENTSPLY International Inc. Composition dentaire sous conditionnement
US20050153258A1 (en) * 2003-11-04 2005-07-14 Mccoy Jay Endodontic gutta percha placement tool with disposable gutta percha cartridge and a motor-driven plunger arrangement
DE602004001126T2 (de) * 2004-03-11 2007-06-06 3M Espe Ag Kapsel zur Lagerung, Mischung und Ausgabe von Materialien
US8123724B2 (en) * 2004-12-09 2012-02-28 West Pharmaceutical Services Of Delaware, Inc. Auto-injection syringe having vent device
EP1819387A4 (fr) 2004-12-09 2011-11-02 West Pharm Serv Inc Seringue a aiguille fixe chargee par l'arriere et dispositif d'injection automatique comprenant celle-ci
US20060286503A1 (en) * 2005-06-20 2006-12-21 Phillip Mark Dosing device including cartridge
US7651012B2 (en) * 2005-09-30 2010-01-26 The Procter & Gamble Company Toothpaste dispenser, toothpaste dispensing system and kit
US7988675B2 (en) * 2005-12-08 2011-08-02 West Pharmaceutical Services Of Delaware, Inc. Automatic injection and retraction devices for use with pre-filled syringe cartridges
US7748567B2 (en) * 2006-03-29 2010-07-06 Nordson Corporation Single dose dual fluid cartridge for use with hand-held applicators
US20100151414A1 (en) * 2006-05-17 2010-06-17 C. Paxton Designs, Inc. Periodontal pocket irrigator
US20080014548A1 (en) * 2006-05-17 2008-01-17 Paxton Christine M Periodontal pocket irrigator
US20070284400A1 (en) * 2006-06-09 2007-12-13 Paul Richard Pierson Package for a dental material
WO2009021033A1 (fr) * 2007-08-06 2009-02-12 Nordson Corporation Distributeur de fluide double
US11191931B2 (en) * 2007-10-01 2021-12-07 Pmt Partners, Llc Methods for manually injecting/aspirating fluids through small diameter catheters and needles and manual injection/aspiration systems including small diameter catheters and needles
GB0721774D0 (en) * 2007-11-07 2007-12-19 3M Innovative Properties Co one-piece vented piston
US9504816B2 (en) 2008-03-17 2016-11-29 Syringetech Llc Multi-mode syringe
US12097357B2 (en) 2008-09-15 2024-09-24 West Pharma. Services IL, Ltd. Stabilized pen injector
EP2461912B1 (fr) 2009-08-04 2016-08-17 3M Innovative Properties Company Distributeur avec libération de pression
USD658763S1 (en) 2010-02-02 2012-05-01 3M Innovative Properties Company Dental capsule
WO2012170986A2 (fr) * 2011-06-10 2012-12-13 Arocha Max Appareil distributeur périodontal régulé et applicateur de doses multiples comportant une valve en demi-lune
USD737958S1 (en) * 2013-10-01 2015-09-01 Dentsply International Inc. Dental material dispenser cartridge and tip
USD760394S1 (en) 2013-10-01 2016-06-28 Dentsply International Inc. Dental material dispenser cartridge and tip
USD760393S1 (en) * 2013-10-01 2016-06-28 Dentsply International Inc. Dental material dispenser cartridge and tip
USD785797S1 (en) * 2014-02-28 2017-05-02 Young Microbrush, Llc Dental dispensing tip
US9427079B2 (en) 2014-02-28 2016-08-30 Young Microbrush, Llc Dental dispensing tip and method of manufacturing
US10987469B2 (en) 2014-09-25 2021-04-27 Pmt Partners, Llc Rotatable finger loop for syringe, syringe configured to receive the rotatable finger loop and associated methods
JP6635698B2 (ja) * 2015-07-14 2020-01-29 ぺんてる株式会社 抵抗構造によりプランジャの可動範囲を制限したアプリケータ
DE102015214697A1 (de) * 2015-07-31 2017-02-02 Transcodent GmbH & Co. KG Composite-Kapsel und Verfahren zum Herstellen einer Composite-Kapsel
DE202016004926U1 (de) 2016-08-12 2017-11-14 Mühlbauer Technology Gmbh Kartusche zum Lagern, Ausgeben und Auftragen einer Dentalmasse
US20180318869A1 (en) * 2017-05-02 2018-11-08 James W. Jensen Pivoting applicator assembly for sealants and adhesives
DE102017111725B4 (de) * 2017-05-30 2024-02-08 Kulzer Gmbh Zwei Komponenten Mischkapsel, insbesondere für dentale Zwecke
JP2022068388A (ja) * 2019-03-20 2022-05-10 テルモ株式会社 プランジャー押圧具
WO2020189149A1 (fr) * 2019-03-20 2020-09-24 テルモ株式会社 Outil de compression de piston

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023751A (en) * 1957-07-02 1962-03-06 Seymour R Lipsky Injection apparatus and ampule
US3581399A (en) * 1969-08-08 1971-06-01 Centrix Inc Composite resin filling syringe and technique
CS148629B1 (fr) * 1970-12-10 1973-03-29
US3827147A (en) * 1971-04-30 1974-08-06 J Condon Dental tool
US3965578A (en) * 1974-09-23 1976-06-29 Grace Development Company Combined amalgam carrier and dental handpiece
US4198756A (en) * 1977-11-18 1980-04-22 Dragan William B Manual extruder
US4391590A (en) * 1981-04-09 1983-07-05 Dentsply Research & Development Corp. Cartridge for viscous material
US4472141A (en) * 1981-10-26 1984-09-18 Dragan William B All purpose dental syringe
GB8615280D0 (en) 1986-06-23 1986-07-30 Rice N Sewer renovation
US4767325A (en) * 1987-04-07 1988-08-30 Dentsply Research & Development Corp. Dental composite carrier and composite package
US4892481A (en) * 1987-04-07 1990-01-09 Dentsply Research & Development Corp. Dental composite carrier and composite package
US4790819A (en) * 1987-08-24 1988-12-13 American Cyanamid Company Fibrin clot delivery device and method
US5129825A (en) * 1987-12-21 1992-07-14 Discko John Jr Dental syringe and capsule for use therewith
US5052927A (en) * 1988-10-24 1991-10-01 Discko John Jr Syringe and disposable capsule with cannula for use therewith
US5083921A (en) * 1989-02-06 1992-01-28 Dragan William B Dental syringe tip
US4969816A (en) * 1989-03-20 1990-11-13 Melvin Drumm Dental material carrier and applicator
US5100320A (en) * 1990-01-16 1992-03-31 Minnesota Mining And Manufacturing Company Dental packaging material and cartridge
US5165890A (en) * 1991-01-07 1992-11-24 Centrix, Inc. Dosing dental cartridge
US5267859A (en) * 1991-01-07 1993-12-07 Centrix, Inc. Bulk dental cartridge
US5297698A (en) * 1991-07-25 1994-03-29 Minnesota Mining And Manufacturing Company Two-stage mixing and dispensing assembly for preparations such as dental cements
US5195663A (en) * 1991-11-25 1993-03-23 Minnesota Mining And Manufacturing Company Mixing and dispensing assembly for preparations such as dental materials
US5286257A (en) * 1992-11-18 1994-02-15 Ultradent Products, Inc. Syringe apparatus with detachable mixing and delivery tip
US5306147A (en) * 1993-06-28 1994-04-26 Dragan William B Dental syringe and cartridge therefor
US5445523A (en) * 1993-09-03 1995-08-29 Ultradent Products, Inc. Syringe apparatus and methods for dispensing viscous materials
DE4332308C1 (de) * 1993-09-23 1994-09-29 Heraeus Kulzer Gmbh Spritze zum dosierten Abgeben von viskosen Werkstoffen, insbesondere von dentalen Werkstoffen
DE4332307C1 (de) * 1993-09-23 1994-09-29 Heraeus Kulzer Gmbh Spritze zum dosierten Abgeben von viskosen Werkstoffen, insbesondere von dentalen Werkstoffen
US5624260A (en) 1994-02-28 1997-04-29 Minnesota Mining And Manufacturing Company Delivery system for aqueous paste dental materials
US5460523A (en) * 1994-07-14 1995-10-24 Jeneric/Pentron Dental composite cartridge
US5697918A (en) * 1995-02-23 1997-12-16 Ultradent Products, Inc. Systems for storing and dispensing dental compositions
JPH08243160A (ja) * 1995-03-14 1996-09-24 Showa Yakuhin Kako Kk 注入用具
US5743436A (en) * 1995-12-08 1998-04-28 Minnesota Mining & Manufacturing Co. Applicator for dispensing material from a dual chamber cartridge
DE19618544C1 (de) * 1996-05-08 1997-10-23 Ivoclar Ag Applikator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7988677B2 (en) 2001-05-24 2011-08-02 Covidien Ag Hand-held, hand-operated power syringe and methods
US8672900B2 (en) 2001-05-24 2014-03-18 Mallinckrodt Llc Hand-held, hand-operated power syringe and methods
US8539644B2 (en) 2006-10-24 2013-09-24 Mallinckrodt Llc Hinge assembly for an injector
US10058656B2 (en) 2006-10-24 2018-08-28 Pmt Partners, Llc Syringe with rotatable element, systems including the syringe, and associated methods
US10207057B2 (en) 2006-10-24 2019-02-19 Control Medical Technology, Llc Syringe with rotatable element, systems including the syringe, and associated methods
US11071827B2 (en) 2006-10-24 2021-07-27 Pmt Partners, Llc Syringe with rotatable element, systems including the syringe, and associated methods
US8672893B2 (en) 2007-10-23 2014-03-18 Control Medical Technology, Llc Syringe with rotatable element, aspiration systems including the syringe, and associated methods

Also Published As

Publication number Publication date
JP2002535071A (ja) 2002-10-22
AU4191699A (en) 2000-08-18
WO2000044300A1 (fr) 2000-08-03
CA2360681A1 (fr) 2000-08-03
DE69935736D1 (de) 2007-05-16
US6095814A (en) 2000-08-01
EP1148834A1 (fr) 2001-10-31
DE69935736T2 (de) 2007-12-27

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